package net.wlm.jtp.dws.log.function;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import net.wlm.jtp.dws.log.bean.PageViewBean;
import net.wlm.jtp.dws.log.utils.DateTimeUtil;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.common.state.StateTtlConfig;
import org.apache.flink.api.common.state.ValueState;
import org.apache.flink.api.common.state.ValueStateDescriptor;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.configuration.Configuration;

import java.util.HashMap;


public class PageViewBeanMapFunction extends RichMapFunction<String, PageViewBean> {

    /**
     * 预先加载地区字段表数据，放到Map集合中
     */
    private HashMap<String, String> getAreaDic() {
        // map集合
        HashMap<String, String> map = new HashMap<>();
        // 添加数据
        map.put("110000","北京");
        map.put("120000","天津");
        map.put("140000","山西");
        map.put("150000","内蒙古");
        map.put("130000","河北");
        map.put("310000","上海");
        map.put("320000","江苏");
        map.put("330000","浙江");
        map.put("340000","安徽");
        map.put("350000","福建");
        map.put("360000","江西");
        map.put("370000","山东");
        map.put("710000","台湾");
        map.put("230000","黑龙江");
        map.put("220000","吉林");
        map.put("210000","辽宁");
        map.put("610000","陕西");
        map.put("620000","甘肃");
        map.put("630000","青海");
        map.put("640000","宁夏");
        map.put("650000","新疆");
        map.put("410000","河南");
        map.put("420000","湖北");
        map.put("430000","湖南");
        map.put("440000","广东");
        map.put("450000","广西");
        map.put("460000","海南");
        map.put("810000","香港");
        map.put("820000","澳门");
        map.put("510000","四川");
        map.put("520000","贵州");
        map.put("530000","云南");
        map.put("500000","重庆");
        map.put("540000","西藏");
        // 返回集合
        return map ;
    }

    // 1.声明变量
    private transient ValueState<String> lastVisitDateState = null;
    private transient HashMap<String, String> areaDic = null;

    public void open(Configuration parameters) {
        /*
          todo 每个mid使用状态保存最近一次访问日期，由于统计每天UV，所以状态生命周期为1天即可，
               可以设置状态TTL为1day，节省内存使用
        */
        // a-初始化状态
        ValueStateDescriptor<String> valueStateDescriptor = new ValueStateDescriptor("lastVisitDate", String.class);
        // ttl 配置
        StateTtlConfig ttl = StateTtlConfig
                .newBuilder(Time.days(1))
                .updateTtlOnCreateAndWrite()
                .neverReturnExpired()
                .build();
        valueStateDescriptor.enableTimeToLive(ttl);
        // 初始化
        lastVisitDateState = getRuntimeContext().getState(valueStateDescriptor);
        areaDic = getAreaDic();
    }

    @Override
    public PageViewBean map(String s) throws Exception {
        // b-解析JSON
        JSONObject jsonObject = JSON.parseObject(s);
        JSONObject object = jsonObject.getJSONObject("common");
        JSONObject pageObject = jsonObject.getJSONObject("page");

        // 省份
        String arValue = object.getString("ar");
        String province = areaDic.getOrDefault(arValue, arValue);
        // uv访客数
        Long uvCount = 0L;
        // 上一次访问日期
        String lastVisitDate = lastVisitDateState.value();
        // 获取当前访问日期
        String visitDate = DateTimeUtil.convertLongToString(jsonObject.getLong("ts"), DateTimeUtil.DATE_FORMAT);
        // c-1 值为null时，表示今日第一次访问，uv字段为1
        // c-2 值为非null时，上一次访问日期 ！= 当前日期，也表示今日第一次访问，uv字段为1
        if (null == lastVisitDate || !lastVisitDate.equals(visitDate)) {
            uvCount = 1L;
            // d-更新状态值
            lastVisitDateState.update(visitDate);
        }
        // 返回实例对象
        return new PageViewBean(
                null,
                null,
                object.getString("ba"),
                object.getString("ch"),
                province,
                object.getString("is_new"),
                // sv: 1 或 0 --> last_page_id is null 1 ,否则 0
                pageObject.get("last_page_id") == null ? 1L : 0L,
                1L,
                pageObject.getLong("during_time"),
                // uv 1 或 0 -> mid 第一次出现 1 否则 0
                uvCount,
                jsonObject.getLong("ts")
        );
    }

    public void close() throws Exception {
        super.close();
    }


}
